Boots – shoes – and leggings
Patent
1993-12-17
1999-03-16
Black, Thomas G.
Boots, shoes, and leggings
39520001, 39520005, 39520016, 364131, 364132, 3642219, 36424296, 364550, 364DIG1, 364DIG2, G06F 1730, G06F 15163
Patent
active
058840729
ABSTRACT:
A networked system having a wide variety of applications and particularly applicable to facilities management systems has multiple levels of software in processsing nodes. The levels include a "features" processing level which communicates requests for data to a software object level containing databases of processes and attributes and database managers. The database managers in the software object level operate to provide data to the high level features in the same format. The software object level communicates with a hardware object level which also contains databases and database managers to mask differences between operational hardware units. By categorizing operational units by type, additional units of a known type can be added with only low level hardware object database changes. Adding units of a new type is facilitated by software changes confined to the lower level hardware and software objects, avoiding software changes at high level features. Individual software objects are tailored for typical types of inputs and output devices encountered by facilities management systems. Universal drive circuitry also provides applicability to a broad range of devices. Data is stored with an aging time such that during a time period when a data item is valid, requests for that particular data item are serviced with the stored data. A request for the particular data item which occurs after the data item aging time is serviced with a new value of the data which is again valid for the aging time.
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Alam Hosain T.
Black Thomas G.
Johnson Service Company
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